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Modicon
Modbus Plus Network
BM85 Bridge Multiplexer
User's Guide
890 USE 103 00
31007492.01
February 2007
Preface
31007492
iii
Preface


      
        
          
        
     
The data and illustrations found in this book are not binding. We reserve
the right to modify our products in line with our policy of continuous
product development. The information in this document is subject to
change without notice, and should not be construed as a commitment by
Schneider Electric.
Schneider Electric assumes no responsibility for any errors that may
appear in this document. If you have any suggestions for improvements
or amendments or have found errors in this publication, please notify us
by e-mail at [email protected]
No part of this document may be reproduced in any form or by any means,
electronic or mechanical, including photocopying, without express written
permission of the Publisher, Schneider Electric.
Caution: All pertinent state, regional, and local safety regulations
must be observed when installing and using this product. For
reasons of safety and to assure compliance with documented
system data, repairs to components should be performed only by
the manufacturer.
MODSOFT is a registered trademark of Schneider Electric. The
following are trademarks of Schneider Electric.
Modbus Modbus Plus BM85 SA85
Modicon 984 BP85 SM85
Borland is a trademark of Borland International, Inc.
PROCOMM is a trademark of Datastorm Technologies, Inc.
DIGITAL and DEC are registered trademarks of Digital Equipment
Corporation.
IBM and IBM ATare registered trademarks and IBM XT is a
trademark of International Business Machines Corporation.
Microsoft and MS-DOSare registered trademarks of Microsoft
Corporation.
Copyright 1995, Schneider Electric
Printed in U.S.A.
Contents
v
Contents
Chapter 1
Introducing the BM85 Bridge/Multiplexers 1. . . . . . . . . . . . . . . . . . . .
 -% #!550'/%+'!3!-.*)* 0.'0. 
 $!* 0.'0.!/2*-& 
 $!*)* 0.'0. 
 1!-1%!2*"* !'. 
 1%''!* !'. 
 *0)/%)#!/$* . 
 +!-/%)#*2!- 
 *)"%#0-/%*)!/$* . 
 -*#-(('!*-/* !'. 
 *)"%#0-%)#/$!-*#-(('!* !'. 
 *"/2-!!1!'*+(!)/**'%/ 
 * 0.*-/* !'. 
 +!%"%/%*).*2!-* !'. 
 -% #!0'/%+'!3!-* !'."*-*2!- 
 *"/2-!!1!'*+(!)/**'%/ 
 !1!'*+(!)/!,0%-!(!)/0++'%! 40./*(!- 
 +!%"%/%*).*2!-* !'. 
 -% #!0'/%+'!3!-* !'."*-*2!- 
 *"/2-!!1!'*+(!)/**'%/ 
 !1!'*+(!)/!,0%-!(!)/0++'%! 40./*(!- 
Chapter 2
Device Addressing and Message Routing 17. . . . . . . . . . . . . . . . . . . .
 * 0.'0.!..#!*0/%)#/$. 
 *0/%)#/*-*#-(('!*)/-*''!-. 
 *0/%)#/**./.! !/2*-& +/!-. 
 *0/%)#/*-% #!0'/%+'!3!-. 
 * 0. -!..*)1!-.%*) 
 *0/%)#3(+'!. 
31007492
Contents
vi
Chapter 3
Configuring the Modbus Models 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 "#+."+10.0 
 +!"(/+2"."!&*%&/%,0". 
 *2".2&"3+#0%"+*#&$1.0&+*.+ "// 
 "-1&."!-1&,)"*0 
 +*#&$1.0&+*%" '(&/0 
 +!1/+.0.)"0"./ 
 *#+.)0&+*+1&((""! 
 +.04," 
 (2""2& "!!."// 
 +))1*& 0&+*.)"0"./ 
 +.0.&+.&04 
 &*'&)"+10 
 +!")++/0". 
 +!1/!!."//, 
 +*#&$1.&*$0%"+!1/+.0/ 
 +**" 0&*$+3".#+.0%"+*#&$1.0&+* 
 "00&*$0%"3&0 %"/ 
 +**" 0&*$0%"".)&*( 
 +1.+*#&$1.0&+*+))*!/ 
 %""#1(0+*#&$1.0&+* 
 +1.+*#&$1.0&+* .""*/ 
 *0".&*$+))*!/*0++1. .""*/ 
 .&*0&*$0%"+*#&$1.0&+* 
 2&*$0%"+*#&$1.0&+* 
 +1. .""* 
 +1. .""*4+10 
 /&*$0%" .""* 
 +1.*! .""*/ 
 +1.+. .""*4+10 
 /&*$0%"+. .""* 
 +1. .""* 
 +1. .""*4+10 
 /&*$0%" .""* 
 "00&*$0%"+!1/(1/!!."// 
 "00&*$0%"+!" 
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 %"*0+"00%"+!" 
 +30+"00%"+!" 
 +!1/+.0*!& 0+.+!"/ 
Chapter 4
Configuring the Programmable Models 57. . . . . . . . . . . . . . . . . . . . . .
 "#+."+10.0 
 +!"(/+2"."!&*%&/%,0". 
 *2".2&"3+#0%"+*#&$1.0&+*.+ "// 
 "-1&."!-1&,)"*0 
 -1&,)"*0#+..&0&*$0%",,(& 0&+*.+$.) 
 -1&,)"*0+.+3*(+!&*$0%",,(& 0&+*.+$.) 
 2".2&"3+#0%""2"(+,)"*0+#03." 
 "2"(+,)"*0+#03."&("/ 
 %"*#+.)0&+*&(" 
 "/0*!")+*/0.0&+*+1. "&("/ 
 1(0&0/'&*$&*+1.,,(& 0&+* 
 */0((&*$0%""2"(+,)"*0+#03." 
 "#1(0.)"0"./ 
 */0((0&+*0",/ 
 .",.&*$0%"#+.+3*(+!&*$ 
 "00&*$0%"+*#&$1.0&+*3&0 %"/ 
 "00&*$0%"+!1/(1/!!."// 
 *!& 0+.+!"/1.&*$+3*(+!&*$ 
 +.)(+3*(+!+!"/ 
 ..+.+!"/ 
 "00&*$0%"+!" 
 %"*0+"00%"+!" 
 +30+"00%"+!" 
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Chapter 5
Installing the BM85 69. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1 Installing the BM85 Hardware 70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1.1 Mounting the BM85 70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1.2 Shelf/Panel Mounted Models 70. . . . . . . . . . . . . . . . . . . . . . . . . .
5.1.3 Rack Mounted Models 71. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2 Connecting the Power Cables 74. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2.1 Connecting AC Power 74. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2.2 Connecting DC Power 74. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3 Connecting the Network and Serial Cables 76. . . . . . . . . . . . . . . . . . . . . . . . .
5.3.1 Connecting a Single Network Cable 77. . . . . . . . . . . . . . . . . . . .
5.3.2 Connecting Dual Network Cables 77. . . . . . . . . . . . . . . . . . . . . .
5.3.3 Connecting DualĆCable Units on SingleĆCable Networks 77.
5.3.4 Connecting Serial Port Cables 77. . . . . . . . . . . . . . . . . . . . . . . . .
5.4 Reading the Indicators 78. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.4.1 POWER and READY Indicators 78. . . . . . . . . . . . . . . . . . . . . . .
5.4.2 Modbus and Serial Port Indicators 78. . . . . . . . . . . . . . . . . . . . .
5.4.3 Modbus Plus Port Status Indicators 79. . . . . . . . . . . . . . . . . . . .
5.5 Attaching Identification Labels 80. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.5.1 Modbus Plus Port Label 80. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.5.2 Serial Port Parameters Label 81. . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix A
Compatible Devices and Cables 83. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.1 Compatible Devices and Cables 84. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.1.1 Abbreviations 84. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.1.2 Making `Quick Connections' 84. . . . . . . . . . . . . . . . . . . . . . . . . .
A.1.3 Devices and Cables for Configuring Modbus Ports 85. . . . . . .
A.1.4 Cables for Modbus Master Devices 85. . . . . . . . . . . . . . . . . . . . .
A.1.5 Cables for Modbus Slave Devices 85. . . . . . . . . . . . . . . . . . . . . .
A.2 Modbus/RS232 Cable Wiring Diagrams 86. . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.3 Modbus/RS232 Ports Pinout 87. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.4 RS485 Ports Pinout 88. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents
31007492 ix
Glossary 89. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Index 98. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figures
Figure 1ąBM85 Bridge/Multiplexers on Modbus Plus 3. . . . . . . . . . . . . . . . . . . .
Figure 2ąBM85 With Typical RS232/485 Devices 7. . . . . . . . . . . . . . . . . . . . . . . .
Figure 3ąBM85 With Typical Modbus Devices 11. . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4ąMessage Frame Routing Path Field 18. . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5ąModbus Plus Routing to Single Modbus Slave 19. . . . . . . . . . . . . . . . . .
Figure 6ąModbus Plus Routing to Networked Modbus Slave 19. . . . . . . . . . . . . .
Figure 7ąBridge Multiplexer Address Conversion 20. . . . . . . . . . . . . . . . . . . . . . . .
Figure 8ąRouting Examples 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 9ąBM85 Modbus Port Types 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10ąBM85 Modbus Models: Port Configuration Switches 40. . . . . . . . . . .
Figure 11ąTypical V1 Screen: Modbus Ports Configuration 46. . . . . . . . . . . . . .
Figure 12ąTypical V2 Screen: Modbus Address Map Entries 48. . . . . . . . . . . . .
Figure 13ąTypical V4 Screen: Save or Initialize the Configuration 50. . . . . . . .
Figure 14ąBM85 Modbus Models: Modbus Plus Address Switches 52. . . . . . . .
Figure 15ąBM85 Programmable Models: Configuration Switches 65. . . . . . . . .
Figure 16ąBM85 Programmable Models: Modbus Plus Address Switches 66. .
Figure 17ąMounting Dimensions: Shelf/Panel Mount Models 72. . . . . . . . . . . . .
Figure 18ąMounting Dimensions: Rack Mount Models 73. . . . . . . . . . . . . . . . . .
Figure 19ąBM85-000 Rear Panel 75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 20ąBM85C, BM85E, BM85S Rear Panel 75. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 21ąBM85D Rear Panel 75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 22ąLayout of the Indicators 78. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 23ąModbus Plus Port Label 80. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 24ąSerial Port Parameters Label 81. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 25ąModbus/RS232 Cable Wiring Diagrams 86. . . . . . . . . . . . . . . . . . . . . . .
Figure 26ąSerial Ports Pinout - Modbus/RS232 87. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 27ąSerial Ports Pinout - RS485 88. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introducing the BM85 Bridge/Multiplexers
31007492
1
Chapter 1
Introducing the BM85
Bridge/Multiplexers
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V   !
V 
V 
V  
V 
V !
V !
Introducing the BM85 Bridge/Multiplexers
31007492
2
1.1 Bridge/Multiplexers on Modbus Plus
1.1.1 The Modbus Plus Network
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1.1.2 The BM85 on Modbus Plus
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Introducing the BM85 Bridge/Multiplexers
31007492
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PROGRAMMABLE
CONTROLLER
TO
OTHER
NODES
BP85
BRIDGE
PLUS
HOST DEVICE
NETWORK
ADAPTER
BM85
BRIDGE
MULTIPLEXER
MODBUS MASTER, SLAVE,
OR NETWORKED DEVICES
HOST
COMPUTER
RS232 OR RS485
SERIAL DEVICES
BM85
BRIDGE
MULTIPLEXER
PROGRAMMABLE
CONTROLLER
MODBUS PLUS NETWORK
MODBUS PLUS NETWORK
Figure 1 BM85 Bridge/Multiplexers on Modbus Plus
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
V 
V 
V 
V 
Introducing the BM85 Bridge/Multiplexers
31007492
4
1.2 Overview of BM85 Models
1.2.1 Available Models
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 (*(!)*!)&* $&#)(
Part Number
Mounting
Method
Operating
Power
(Nominal)
Modbus Plus
Network
Cable
Serial
Ports
Serial
Protocol
NW–BM85–000 (Note 1) Panel or Shelf 115/230 Vac Single Modbus ASCII or RTU
NW–BM85C002 Panel or Shelf 115/230 Vac or
24 Vdc
Single or Dual Modbus ASCII or RTU
NW–BM85D008 19 in Rack 125 Vdc or
24 Vdc
Single or Dual Modbus ASCII or RTU
NW–BM85E232 (Note 2) Panel or Shelf 115/230 Vac or
24 Vdc
Single or Dual RS232 Programmable,
User Defined
NW–BM85D002 19 in Rack 125 Vdc or
24 Vdc
Single or Dual RS232 Programmable,
User Defined
NW–BM85E485 (Note 3) Panel or Shelf 115/230 Vac or
24 Vdc
Single or Dual RS485 Programmable,
User Defined
NW–BM85S232 Panel or Shelf 115/230 Vac or
24 Vdc
Single or Dual RS232 Programmable,
User Defined
NW–BM85S485 Panel or Shelf 115/230 Vac or
24 Vdc
Single or Dual RS485 Programmable,
User Defined
Notes
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%-!%)*##*!&%)
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%-!%)*##*!&%)
 &#  )%('# . &(
%-!%)*##*!&%)
1.2.2 Mounting Methods
&(* '%#) #$&#)* &**&$)+(!)!**-!* ')
&('#$%*&% &(!/&%*#) #("*)()+''#!&()+(!%
* +%!**&* ) #&(&(** !%!**&,(*!#'%#
"0$&+%*$&#)(&(!%)*##*!&%!%*&)*%(0!% ("
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1.2.3 Operating Power
AC/DC Models
# , ') &,+ ,.**&$ 0$-#*)0 +& )!!-'& ("-#!)+
)* +-$)( !+)'   )+   ,$("& *#,  *)0 +#
& )(( -,-),)% -)(-# + +*( &+).($("$,-#+)."#-#
& # )(-$(,(&$( !., -#-$, ,,$& -)-# ., +
&&)!-# , ') &, 1 *--# (&,))* +- !+)'(
1- +(&,).+ )0 +)(( -,-),)% -)(-# + +*( &
+).($("$,-#+)."#-# & # *)0 +,).+ '.,- !., 
1- +(&&2-)-# 
DC/DC Models
# , ') &,)* +- !+)')+,).+ )0 +)(( -,
-)- +'$(&,-+$*)(-# + +*( &"+).($("- +'$(&$,*+)/$ 
# *)0 +,).+ '.,- !.,  1- +(&&2-)-# 
1.2.4 Configuration Methods
&&') &,'.,- )(!$".+ $(- +(&&2!)+2).+**&$-$)(
 !)+ 2).()(( --# '!)+)* +-$)($(2).+**&$-$)(#$,$,
(  ,,+2 ., -# ,$(- +(&)(!$".+-$)(,* $!$ ,#)0 #
, +$&*)+-0$&&)* +- 
#') &#,-0), -,)!+ +*( &,0$-# ,( , -,,$"(,-#
).,&.,() + ,,# )-# +, -&&)0,2).-) $-# +)(!$".+
-# .($-)+, -$-$(-)$-,') 
Configuring the Modbus Port Models
)+-# ).,, +$&*)+-') &,2).)(!$".+ -# .($-&)&&2-
, +$&- +'$(&)(( - -))( )!$-,*)+-,
Configuring the Programmable Port Models
)+-# *+)"+''& ') &,2).+ - (**&$-$)(*+)"+'
1- +(&&2-)-# (-# ()0(&)$--)-# .($-+),,-#
).,&.,( -0)+%
Setting the RUN Mode
# (2).#/ *+)* +&2)'*& - 2).+)(!$".+-$)()!-# 2).
(, -$-$(-)$-,') !)+)* +-$)($(2).+**&$-$)(
Caution:ąDo not connect the BM85 into your application
environment unless you have set its internal configuration.
Do not connect it to your network or to any device unless you
have set its switches properly for configuring or running.
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1.3 Programmable Port Models
Part Number
Mounting
Method
Operating
Power
(Nominal)
Modbus Plus
Network
Cable
Serial
Ports
Serial
Protocol
NW–BM85E232 Panel or Shelf 115/230 Vac or
24 Vdc
Single or Dual RS232 Programmable,
User Defined
NW–BM85D002 19 in Rack 125 Vdc or
24 Vdc
Single or Dual RS232 Programmable,
User Defined
NW–BM85E485 Panel or Shelf 115/230 Vac or
24 Vdc
Single or Dual RS485 Programmable,
User Defined
NW–BM85S232 Panel or Shelf 115/230 Vac or
24 Vdc
Single or Dual RS232 Programmable,
User Defined
NW–BM85S485 Panel or Shelf 115/230 Vac or
24 Vdc
Single or Dual RS485 Programmable,
User Defined
# !).+, +$&*)+-,)(-# , ') &,+ *+)"+''& 2-# ., +-)
,.**)+-.,-)')+, +$& /$ ,
# , ') &,'.,- )0(&) 0$-#( 1 .-& **&$-$)(
*+)"+'+),,-# ).,&.,( -0)+%# )0(&) $'"
)(-$(,&&)!-# $(- +(&)* +-$(") ., 2-# $(&.$("
)''.($-$)(*+)-))&,!)+-# , +$&*)+-,#(,#%$("*+)-))&
-+(,&-$)( -0 (*)+-,' ,," *%"$(".!! +,* -
)(/ +,$)(( ++)+#(&$("#, +$&*)+-$($-)+$,$($/$.&&2
*+)"+''& -),#)0-# *)+-,,--.,$(-# **&$-$)(
# $'" ()(-$(&&)!-# , +$&*)+-*+' - +,!)+ 1'*& 
.+- ,(*+$-2,!$1 *+' - +,&- +(-$/ &2-# $'"
).&*+)/$ &)&*+)-))& !.&-*+' - +,(' (.$("
,2,- '!)+-# ., +-)&)&&2)(!$".+ -# , +$&*)+-,-#+)."#
- +'$(&-)( )!-# *)+-,
($-$)(-),-(+, +$& /$ ,).,',- +)+,&/  /$ ,
).& --# -, +$&*)+-,$!-# ., +4 !$( ) $(&. ,
).,*+)-))&#(& +
).(+ - -# **&$-$)(*+)"+')((33)+
)'*-$& .,$(")$)(,)!-0+  / &)*' (--))&,# , +
/$&& !+)')$)(.,-)' + +/$ (+ ,#$** , *+- &2
!+)'-#  -$&,)!-#  / &)*' (--))&,+ *+)/$ $(
 -$)(
# ()* +- ,!.&&24*+)"+'' *+) ,,)+$(-# ., +
**&$-$)(# .($-(&)&&2'(" *+) ,, ,-$-,, +$&*)+-,
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%% ##$! %  &$&$$$$$ #
#-'$%%&$#! #% %# ##*&% $#!# '
%' !%$ %(# ##%&%!%$$(%%
$!!% !# # #$$#%#%%%$$
BM85
BRIDGE
MULTIPLEXER
1234
DISPLAY
SCALE
CONTROLLER
DEVICE
MODBUS
MODBUS PLUS
NOTE 3
NOTE 1
NOTE 2
READER
BARCODE
Figure 2 BM85 With Typical RS232/485 Devices
&#$&#+$%%*!* &% '$%%$#! #%$
Notes
  # !%'$##"&# #%#$!%'
 $'$ %) %$

  ,, &% $$% '$%!!% $*
%$%# !# #*%&$# ( %
%# $$ &$&$
  &$$%# #$''$&$%&$#- 
&$ &$!# %  #
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1.4 Configuring the Programmable Models
Developing the Application
#-$*$#*')*()$"/%'$'""!"$!(-$*"*()
+!$%)#)'%%!)$#(!#)#$,#!$)#)$
)(#!*()$%')#$$'"((#!#
*'!!$)$#%'$)$$!$#+'($##-$*'('!%$')%'")'(
$*#'))%%!)$#%'$'"$##..$'$"%)!
*(#$$#($),'+!$%"#))$$!())'(%%(%')!-
'$")('&*')*($$'!#..+!$%"#)
#+'$#"#),"*()(*%%!-)*('
#)$#)$)(#)'#!$#*')$#)($*(!*(#$
'(("*()((#(($##()$','(,)($#
)''%#!
Downloading the Application
$"%!%%!)$##)#$,#!$)$)*(#
*)!)-(*%%!,))$$#)$$!($,#!$$()#)
("$"%*)')),(*($'+!$%#)%%!)$#$'
(%')$"%*)'
$'$,#!$#)$()"*()$#)#$$#$*(!*(
#),$' %)'$'#$"%)! $() $'$$# 
%)'$'#'$##!$"%)!$()#),$'
$##)$#(+!!$')#)+#)-$)$()#$-$*
#$,#!$#*-$*'%%!)$#!$!!-)',(-$*#
$,#!$))$)))(#()!!)$#()
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')#-))'%$,'('"$+)%'")'('
$'')$')#)##()!!)$#())*#)#)'#(%$'))$
)()##()!!)',)$*)'$#*')$#
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1.4.1 Software Development Tool Kit
'$-.$)"*!!$' --/++'$ $).# *!.1,  0 '*+( ).&$.$-
+,*0$ $) .$*)#  0 '*+( )..**'-$)'/ 
V  *,') 44 ,/).$(  -.,./+ ,*/.$)
V )*% .'$,,3*!/.$'$.3,*/.$) -$)'/$)"!/).$*)-!*,
()"$)"(/'.$+' .-&-$).# ++'$.$*)
V */-'/-..,)-! ,/.$'$.3,*/.$)
V #  ,!$' *).$)$)"!/).$*)+,*.*.3+ -
V *(+$'  (*)-.,.$*)+,*",(1$.#-*/, * -#*1$)"
2(+' -*!.# /- *!!/).$*)-$).3+$'++'$.$*)
V -./.$'$.$ -$)'/$)"-*/, * .#. 2 ,$- #,1,
V # *1)'*/.$'$.3!*,'*$)".# ++'$.$*).*.# 
#  0 '*+( )..**'&$.$--/++'$ *)*(+.$' $-&-
, ,$)"$)!*,(.$*)$-"$0 ) '*1
Contact Telephone
Modicon Customer Service 1–800–468–5342 (North America)
1–508–975–5001 (International)
Part Number Description
SR–BM85–S00 BM85 Software Development Kit (Note 1)
SR–BM85–S0R BM85 Software Support Renewal (Note 2)
Notes
 #  &$.$)'/ -*/( )..$*)  -,$$)" #*1.*
V )-.''.#  0 '*+( ).-*!.1,
V *(+$' )'$)&3*/,++'$.$*)
V *1)'*3*/,++'$.$*).*.# 
# &$.$)'/ -3-*!-*!.1,  0 '*+( ).. #)$'
-/++*,.- ,0$ +,*0$ 3*$*)/-.*( , ,0$ # -/++*,.
, ) 1'  2. )- .#   -*!.1,   0 '*+( ).
. #)$'-/++*,.- ,0$  3*).# $)$.$'53+ ,$*
Introducing the BM85 Bridge/Multiplexers
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1.5 Modbus Port Models
Part Number
Mounting
Method
Operating
Power
(Nominal)
Modbus Plus
Network
Cable
Serial
Ports
Serial
Protocol
NW–BM85–000 Panel or Shelf 115/230 Vac Single Modbus ASCII or RTU
NW–BM85C002 Panel or Shelf 115/230 Vac or
24 Vdc
Single or Dual Modbus ASCII or RTU
NW–BM85D008 19 in Rack 125 Vdc or
24 Vdc
Single or Dual Modbus ASCII or RTU
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#""("'& (&!" (##"$#&('(("'+((# #+
# '()$#($&!(&'"$$ ,"$#+&(#(
'$ ,'!")'#"((&!" #&'((")$(#")&(#"
$#&(''$&( ,#")& #)''"#)&"'#
$&!(&'#&$#&(
V #&( (,$  #)' !'(&' "(!'(&' *#&"(+#&
V &#(##    
V #!!)"(#"$&!(&'  ) &('(#$('$&(,!#
V &''!$$"  #&#"*&'#"(+"#)' &''' "
#)' )'&#)("
"(#"(#('& $#&(#")&(#"'('#)' )'
"#&''!)'(''"''#""'(#&+&
'+('#"(&&$" 
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&#&&(()"("(&"'$#&((#("'( (#"'("
"'( (&+(#)(&#")&(#"
/